The London incidents, involving a brother of King Salman as well as an assault on a Saudi critic, suggest a long suspected greater degree of domestic questioning of Saudi Arabia’s 3.5-year-old ill-fated war in Yemen than has been publicly evident until now.

Although focused on British-Saudi economic and political relations, the report by King’s College London and the Oxford Research Group calls into question not only British, but also by implication long-standing Western willingness, to turn a blind eye to the kingdom’s violations of human rights and its conduct of the Yemen war that has produced one of the world’s worst humanitarian crises.

The Spanish cancellation came on the heels of last month’s Saudi-Canadian spat sparked by a call on Saudi Arabia by Canada’s ambassador to the kingdom, Dennis Horak, to release detained women activists, including Samar Badawi, the sister-in-law of a recently naturalized Canadian citizen, Ensaf Haidar.

Ms. Haidar is married to Ms. Badawi’s brother, Raif Badawi, who was arrested in 2012 and sentenced to ten years in prison and 1,000 lashes for promoting freedom of expression and women’s rights.

In a rare public distancing from the Salmans, Saudi Prince Ahmed bin Abdelaziz – one of the few still living sons of the founder of Saudi Arabia and a younger brother of King Salman, asked anti-Saudi protesters on a London street chanting “down, down Al Saud” and “Al Saud criminal family”: “What does the al-Saud family have to do with your chants? We have nothing to do with what is happening (in Yemen). Certain officials are responsible.”

Asked by protesters who he held responsible, Prince Ahmed, who served as deputy interior minister for 37 years and briefly as interior minister under King Salman’s predecessor, King Abdullah, said “the king and his heir apparent,” a reference to King Salman and Prince Mohammed.

The state-run Saudi News Agency subsequently quoted Prince Ahmed as seeking to roll back his comments captured on video by saying that he said that “the King and the Crown Prince are responsible for the state and its decisions. This is true for the security and stability of the country and the people.”

In a bid to stymie criticism, Saudi prosecutors this week reportedly sought the death penalty against prominent cleric Salman Al-Odah who was detained a year ago.

“The Saudi attorney general accused my father @salman_alodah of 37 charges and asked for his execution,” his son Abdullah said in a tweet. He said some of the charges were related to comments Mr. Al-Odah had posted on Twitter and membership in organizations associated with Qatar and Qatari-Egyptian Islamic scholar Sheikh Yousef al-Qaradawi, who is close to the Muslim Brotherhood. Mr. Al-Odah has 14 million Twitter followers.

Applying a cost-benefit analysis, The Kings College/Oxford Research Group report concluded that, contrary to the projections of the government of Prime Minister Theresa May and popular perception, Britain enjoyed limited economic benefit from its relationship with Saudi Arabia while suffering considerable reputational damage.

The report noted that Britain’s $8 billion in exports to Saudi Arabia accounted for a mere one percent of total exports in 2016. The British Treasury reaped $38.5 million in revenues from arms sales or a paltry 0.004 percent of the Treasury’s total income in 2016. Overall, Britain’s defense industry produced in 2010/11 only one percent of the country’s total output and created a meagre 0.6 percent of all jobs.

The analysis stroked with the conclusion of a 2016 study by the Stockholm International Peace Research Institute (SIPRI) and Campaign Against Arms Trade (CAAT) that “arms exports cannot be said to represent an important part of the UK economy, and even less so of the labour market, despite the prominence of the ‘jobs argument’ amongst politicians and industry figures seeking to promote and defend arms exports.”

The King’s College/Oxford Research report took issue with assertions by successive British governments that trade and weapons sales as well as support for Saudi Crown Prince Mohammed bin Salman’s reform programme enabled Britain to influence Saudi policy and introduce democratic and human rights values.

“There is little evidence, based on publicly available information, that the UK exerts either influence or leverage over Saudi Arabia. In fact, there is greater evidence that Saudi Arabia exerts influence over the UK. There is a contradiction between the UK presenting itself as a progressive, liberal country and defender of the international rules-based order, while at the same time providing diplomatic cover for a regime, which, based on our analysis, is undermining that rules-based order,” the report said.

It warned that “the UK appears to be incurring reputational costs as a result of its relationship with Saudi Arabia, while the economic benefits to the UK are questionable.”

The report’s call on the British government to critically analyse its foreign policy and limit and be more selective and transparent in its engagement with Saudi Arabia and constitute an approach that would appeal to other European governments.

It could also attract support from some members of the US Congress, despite US President Donald Trump’s backing of Saudi policies, with public criticism of the kingdom mounting in Europe and the United States as well as growing unease among some officials and politicians.

Saudi Arabia “is a case study in what happens when a country’s supposed economic interests come into conflict with its stated norms and values and its international obligations. The situation cannot carry on indefinitely,” said Armida van Rij, one of the report’s authors.